Deepali has to travel a distance of 300 km. She walked for 2 hours at speed of 60.2 km/hr and the next 3 hours at 35.3 km/hr. How much distance does she still need to walk to complete the whole journey?
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74.1 km
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73.1 km
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74.7 km
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73.7 km
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None of these
D
Correct answer
Explanation
Total distance to be covered = 300 km
Total distance covered in 2 hours = (60.2 x 2) km = 120.4 km
Total distance covered in next 3 hours = (35.3 x 3) km = 105.9 km
Total distance covered in 5 hours = (120.4 + 105.9) km = 226.3 km
Remaining distance to be covered = (300 - 226.3) km = 73.7 km